| 摘要 |
PROBLEM TO BE SOLVED: To increase lightweight properties and mechanical strength and to continuously obtain a long article by forming a three-layered structure, wherein a resin layer containing microballoons selected from the group consisting of glass balloons and plastic balloons is molded as an intermediate layer, and fiber reinforced resin layers are integrally molded as upper and lower layers. SOLUTION: A resin layer containing microballoons such as glass balloons or plastic microbaloons is formed as an intermediate layer, and fiber reinforced resin layers are formed as upper and lower layers to constitute a three-layered structure. A composite plastic panel is produced by a method wherein a thermosetting resin soln. 3 for the lower layer is applied to the lower carrier film on a conveyor 17, and reinforcing fibers 1 for the lower layer are supplied to obtain an impregnated mixture 18 for the lower layer through an impregnation roller 6. Reinforcing fibers 11 are supplied to an upper carrier film 12, and the thermosetting resin soln. 13 for the upper layer is applied to the fiber layer to obtain an impregnated mixture 19 for the upper layer through an impregnation rotary roller 16. This mixture 19 is laminated on the impregnated mixture 19 for the lower layer along with a compd. 8 for the intermediate layer, and all of them are passed through a heating over 20 through an impregnation rotary roller 9. |
